Molding apparatus.



A. A. PAULY.

' MOLDING APPARATUS.

APPLICATION FILED 0012s, 1911.

1,029,560. A Patented June 11,1912.

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ATTORNEY e'o'LL'MaIA PLAN'goRAPl-l co.. WASHINGTON. D c.

A. A. PAULY.

MOLDING APPARATUS.

APPLICATION FILED 0012s, 1911.

1,029,560. Patented June 11,1912.

5 SHEETSSHBET 2.

FIG. 2.

WITNESSES I NVBNTOR ATTORNEY COLUMBIA FLANOURAPH c0" WASHINGTON. D. Q

A. A. PAULY.

MOLDING APPARATUS.

APPLICATION FILED 0073.28, 1911.

1,029,560. Patented June 11, 1912.

A m a. (PM gy 7 BY 4 mm ATTORNEY A. A. PAULY.

MOLDING APPARATUS.

APPLICATION FILED 00T.28, 1911.

Patented June 11, 1912.

5 8HEETSSHEET 4.

INVENTOR ATTORNEY LOLUMIHA PLANOGIIAPII IO-.WASHINGTON, n u

A. A. PAULY.

MOLDING APPARATUS.

APPLICATION FILED 0OT.28, 1911.

Patented June 11, 1912.

5 SHEETS-SHEET 5.

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UNTT MOLDING APPARATUS.

Specification of Letters Patent.

Patented June 11, 1912.

Application filed October 28, 1911. Serial No. 657,243.

To all whom it may concern:

Be it known that I, ALBERT A. PAULY, a citizen of the United States,residing at Youngstown, in the county of Mahoning and State of Ohio,have invented new and useful Improvements in Molding Apparatus, of whichthe following is a specification.

My invention relates to apparatus for molding cementitious and similararticles.

The principal object thereof is to provide a simple and comparativelycheap molding apparatus constructed to support the weight of the moldedarticles during their down ward ejection.

The apparatus illustrated on the drawings is designed for molding hollowblocks from cementitious material, such as Portland cement, and showsthe apparatus substantially in the form in which I have built it foractual use.

Referring to the accompanying drawings, Figure 1 is a side view of myinvention with the parts in position for molding. Fig. 2 is a similarview with the parts as they are when the article is discharged. Fig. 3is a section on the line 3-3, Fig. 1. Fig. 4 is an end View of Fig. 1.Fig. 5 is a crosssection of the beam and cores. Fig. 6 is a view of oneof the pallet holders and a portion of a pallet. Fig. 7 is a perspectiveof the ejector with the lower end of its actuating rods. Fig. 8 is aperspective of one of the cores. Fig. 9 is a perspective of an articlewhich the apparatus shown is adapted to make. Fig. 10 is a modificationof Fig. 4. Fig. 11 is a modification of a portion of a mold and die fordrain tile.

12 is a view showing the preferred adjustable relations of the beam 17to the rods 26.

On the drawings, 1 designates four corner posts, which may support thesectional mold body 2 in various ways. I have shown the transverse endsections 3 of the mold-body provided with vertical flanges 4 bolted tothe end posts. The intermediate transverse sections 5 of the mold-bodyare arranged parallel to the end sections3 and between the same. Thelongitudinal sections 6 of the mold bodyengage the ends of thetransverse sections 3 and 5, to which they are tightly bolted. Theseveral end, transverse and longitudinal sections divide the mold bodyinto verticalmold spaces 7, their tops and bottoms being open except ashereinafter described.

ends 8 is a steam pipe lying along one of the sections 6 and suppliedwith steam from the supply pipe 9.

10 are short steam pipes to convey steam from the pipe 8 to the hollowinterior of the sections of the mold body. The pipes 10 preferably openopposite the ends of the hollow transverse sections 3 and 5, valves 11being provided to control the steam to each of the pipes 10. Thesections 6 are hollow from one closed end to the other and have lateralopenings to form a steam connection with the hollow transverse members.A valved drainage pipe 12 is provided near the bottom of the mold bodyto discharge water condensed from the steam therein.

Secured to the posts 1 above and parallel to the mold body 2 is thehollow beam 13, t0 the under side of which are bolted the pendent hollowcores 14 extending down through the several mold spaces 7 with theirlower ends in the plane of the bottom of the mold body. The beam 13 hasopenings to admit steam to the cores, which have closed lower endsprovided with removable plugs 15, whereby the water of condensation inthe cores may be discharged. The cores 14 are arranged so as to leave amolding space between them and the adjacent sections of the mold bodyand also between adjacent cores where more than one core is located inone mold space 7.

16 is the steam supply pipe for the beam 13.

Above and parallel to the beam 13 I place the vertically reciprocatingcrosshead or bar 17, to which I secure the vertical rods 17 which extenddownwardly past the beam 13 and are secured to the pushers or ejectors18, having the same shape and horizontal dimensions as the molded arti--cles and surrounding the cores.

To the top of the cross-head 17, I secure means to actuate the same.Though many means may be devised for this purpose, I have shown tworacks 19 having their lower ends connected to the cross-head, the racksgearing with the pinions 20 on the shaft 21 driven from the handles 22through the intermediate system of gearing 23.

To the racks 19 I pivotally connect the levers 24 having their outerends connected to cross bars 25, to which are suspended the verticalrods 26 supporting at their lower the transverse horizontalpalletholders 27 These pallet-holders extend beneath the end sections 3and slightly beneath the adjacent mold spaces so as to form seats orsupports for thepallet 28 which closes the bottom of the mold duringmolding operations, and the weight of the molded articles during theejecting operations. The inner ends of the lever 24 carry adjustableweights 29, which give the pallet-an upward tendency sufiicient tosupport the pallet and the articles while the latter are being moldedand ejected. The levers are connected by the link 30 to cause them tooperate in unison.

31 is a handle for actuating the levers 24 and connected mechanism.

Beneath the pallet I prefer to have some formof conveyer for the moldedarticles. I show below the pallet the track 32, on which cars, such as33, may be operated. I show in Fig. 2 a car about to receive apalletwith molded articles therein.

The operation is as follows: The parts being as in Fig. 1 where thepallet 28 is held against the bottom of the mold body by forcetransmitted from the weights 29, and where the ejectors 18 are raisedabove the mold body, the cement is poured into the mold spaces aroundthe cores, the sections of the mold body and the cores being suppliedwith steam. In a few minutes, the

cement has, by the aid of the steam-heated mold body and cores, becomesufficiently hardened or set to be ejected, whereupon the handles 22 areactuated to cause the cross-head 17 to be lowered. The first part of themovement of the cross-head brings the ejectors into engagement with thetop of the molded articles in the mold spaces. During this part of thesaid movement the weights lower the inner ends of the levers 24, whilethey keep the pallet in its position against the mold body and cores. Assoon as the ejectors reach the molded articles, their movement istransmitted to the molded articles which are then forced graduallydownward while resting on the pallet, still held against theirlower endsby the weights 29. During the ejection of the articles 34, one of whichis shown in Fig. 9, the levers 24 move down with the cross-head andother connected parts without pivotal movement. When the articles havebeen entirely ejected from the mold body, the pallet soon reaches thecore 33 (Fig. 2) and the handles 22 are stopped. An attendant thenswings the handle 31 to the left, thereby causing the pallet holders 27to be lowered, so that the pallet is wholly supported by the car, whichis then pushed away on the track 32. Another pallet is placed on theholders 27 and the handles 22 are rotated so as to return the parts tothe position shown in Fig. 1.

and shortened the rods 26 and located them so that their upper ends willbe engaged by the cross-head as soon as the ejectors have engaged thearticle in the mold body. T 0

the pallet-holders 27 at each end of the machine I secure the cables, orropes 35 which cable 38 having the weight 39 thereon. The

weight 39 preferably counterbalances the weight of the holders 27, thepallet 28, the rods 26, and the molded articles 34, and keeps the pallet28 in contact with the bottom of the mold-body during the moldingoperations, and with the articles 34 during the ejecting operations.Duringthe ejecting of the articles the weight 39 rises to a positionopposite the rock shaft 40, which has the operating handle 41, and thearm 42, the latter being adapted to engage the bottom of the weight 39.Preferably the tops of the rods 26 are provided with threaded sleeves 45so that the space which the cross head 17 must travel before actuatingthe rod 26 may be adjusted. When the pallet with the articles 34 thereonreaches the car 33 (Fig. 10), the lever 41 is moved to the right tocause the arm 42 at each end of the machine to engage the weights 39 andlift them slightly, thereby permittingthe pallet-holder 27 to dropslightly below the pallet 28, so that the car with the pallet andarticles thereon may be run along the track 32 to make room for anothercar. Another pallet is placed on the holders 27 and the lever 41returned to the left, permitting the weight to move the pallet intoengagement with the bottom of the mold-body. I have not deemed itnecessary to illustrate both ends of the machine with the modificationsshown in Fig. 10, because both ends are alike, the shaft 40 connectingthe arms 42.

In Fig. 11, I have shown the core 14 and the mold-body 2 adapted to themaking of clay drain tiles, a ring 43 being secured to the pallet 28 bythe screws to form the inner shoulder. of the bell 44 on the tile 34.

It is evident that changes may be :made'in the details and theircombination without departing from the spirit of my invention.Accordingly, I desire to cover all such changes so far as the claimswill permit the same.

I claim 1. In a molding apparatus, a mold-body having mold-spaces withopen lower ends, a pallet to close the bottom of the moldspaces, anejecting means to push the molded articles downwardly through themold-body,

having mold-spaces with open lower ends, a pallet to close the bottom ofthe moldspaces, an ejecting means to push the molded articles downwardlythrough the mold-body, a support for the pallet, and means for giving adownward movement to the support independently of the ejecting means atthe close of the ejecting operation.

3. In a molding apparatus, a mold-body having an open bottom, a pallethaving a yielding upward tendency, a conveyer below the pallet andspaced therefrom, and means for pushing a molded article downwardlythrough the mold-body and against the yieldable pallet until the palletrests on the conveyer.

4. In a molding apparatus, a mold-body having an open bottom, a palletclosing the bottom of the mold-body, a pallet-rest below the pallet andspaced therefrom, means for ejecting a molded article downwardly throughthe mold-body and delivering the pallet with the article thereon to therest,

and means for supporting the pallet and giving it a yielding upwardtendency while the first means is operating.

5. In a molding apparatus, a mold-body having an open bottom, a palletclosing the bottom of the mold-body, a pallet-rest below the pallet andspaced therefrom, means for ejecting a molded article downwardly throughthe mold-body and delivering the pallet with the article thereon to therest, means for supporting the pallet and giving it a yielding upwardtendency while the first means is operating, and means for removing thepallet-supporting means out of contact with the pallet when the palletis lowered upon the said rest.

Signed at Pittsburgh, Pa, this 16th day of October, A. D. 1911.

ALBERT A. PAULY.

Witnesses:

F. N. BARBER, ANNA R. BEATTY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington D. G.

